Home / 28,114.27-42,183.13-12,330.64

Finding the Fourth Proportional to 28,114.27, 42,183.13 and 12,330.64

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Solution

The fourth proportional to 28,114.27, 42,183.13 and 12,330.64 is: 18,501.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,114.27 : 42,183.13 = 12,330.64 : x
  2. Step 2: Convert to fraction form
    28,114.27/42,183.13 = 12,330.64/x
  3. Step 3: Cross multiply
    28,114.27x = 42,183.13 × 12,330.64
  4. Step 4: Simplify right side
    28,114.27x = 520,145,094.45
  5. Step 5: Solve for x
    x = 520,145,094.45/28,114.27
  6. Step 6: Final answer
    x = 18,501.11

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.